The expression is .
Apply subtraction property of equality: Subtract 5 from each side .
\ (Apply additive inverse property:
)
(Apply additive identity property: a + 0 = a)
Apply division property of equality: Divide each side by 5.
\ (Cancel common terms)
(Take square root of each side)
Rewrite the () using imaginary unit; that is
where
.
(Find the square root:
)
The value of .